Dosage patterns of cigarette smoking in American adults.
D000328:Adult; D000367:Age Factors; D000368:Aged; D005260:Female; D006306:Health Surveys; D006801:Humans; D008297:Male; D008875:Middle Aged; D009538:Nicotine / Q000008:administration & dosage*; D010947:Plants, Toxic; D012737:Sex Factors; D012907:Smoking; D013638:Tars / Q000008:administration & dosage*; D014026:Nicotiana; D014481:United States
D013638:Tars; D009538:Nicotine